Adjustable spanner.



No. 833,065. I PATENTED 00w. 9, 1906. A. R. LARSSENQ ADJUSTABLE SPANNER. APPLICATION FILED MAR.17,1906.

l0 ABLLurssen- UNITED STATES PATENT OFFICE.

ANTON ROBERT LARSSEN, OF AALESUND, NORWAY.

A'DJUSTABLE SPANNER.

Specification of Letters Patent.

Patented Oct. 9, 1906.

To all whom it may concern:

Be it known that I, ANTON ROBERT LARS- SEN, mate, a subject of the King of Norway, residing at Ystenaesset, city of Aalesund, Norway, have invented new and useful Improvements in Adjustable Spanners, of which the following is a specification.

The present invention has for its object to Fig. 2 is a cross-sectional view on the line a, b,

and Fig. 3 is a similar view on the line d, in Fig. 1 looking in the direction of the arrows. Fig. 4 is a view similar to that of Fig. 3, but with the spindle removed. Fig. 5 is a fragmentary longitudinal section on the line e f in Fi 4.

%)n the stem 1 the jaw 2 is movable between the fixed head 3 and the stop 4. The jaw 2 is adjusted by means of the spindle 5, one end of which projects into a hole pvided in the rear portion of the j aw 2 and is secured there by a screw 6,which enters into a recess 7 near the end of the s indle. This recess is of such dimensions t at the spindle 5 by means of the handle 8 can only be turned a quarter of a revolution in either direction.

The spindle may be provided with usual threads 9 and is filed fiat on both sides, so that its cross-section has essentially a rectangular shape. The threads are passed through a hole 10 in the fixed part of the handle. This hole has. corresponding threads 11; but the latter are removed at two opposite parts, so that the screw may in a certain position pass through the said hole (see Fig. 3) while it is held fast in any other position.

When the spanner is used, the handle 8 first must be brought to the position shown in Figs. 1 and 2. The aw 2 then canbe freely moved back and forward on the stem 1,

9 can engage with the. threads 11 in the hole 10 when the spindle is turned a quarter of a revolution and is stopped by the pin 6. The jaw 2 is thus secured and the spanner can be used. By turning the spindle 5 back again the jaw 2 is loosened. The wrench can be used for all sizes of nuts occurring in practice when the pitch of the threads 9 is made as occasion re uires. Instead of threads 9 and 11 single nots or inclined projections may evidently be used.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

A spanner comprising a shank and a handle, a stationary jaw secured to the shank, a jaw movable on the shank and having a recess therein, said handle having a projecting under part having a hole therein provided with screw-threads on its sides but having its top and bottom plain, a rectangularlyshaped spindle having its end engaging in the recess. in the movable jaw and said end having a peripheral groovetherein extending for a quarter of the periphery thereof, a

screw in said movable jaw having its end engaging in said groove, the other end of said spindle fitting in the hole in the projecting part of thehandle and having screw-threads on two of its sides and the other two sides being flat and lain, said screw-threaded sides of the spind e being smaller than the plain portions of the hole so that the spindle may slide through the hole when the screwthreaded sides of the spindle are opposite the plain sides of the hole and a handle 8 proj ecting laterally from the s indle.

In testimony whereof have signed my name to this specification in the presence of two subscribing witnesses.

ANTON ROBERT LARSSEN.

Witnesses:

KR. INGBRIsTsU, Sren. INGEBRIGTSER.. 

